Narrative:

Departed. At 500 ft agl; safe airspeed (>80 kts); flaps up; gear up; fuel pump off turned cross wind at 1200 ft. At that point an aircraft announced that it was coming in from north for downwind; looked for aircraft coming in from north; no joy. Turned downwind. Called for aircraft coming in from north. Soon after turn; aircraft from the north announced he could see me; that he was behind me and would maintain safe distance. At approximately abeam mid-field; another aircraft announced it was entering pattern on base from the west. I began looking and began my setup abeam touchdown point; flaps; power; 500 ft descent; at that point I saw the aircraft coming in on base; higher than me; to my right about 1/2 mile. I communicated; and he stated he would extend his downwind. I turned base a little early to avoid other aircraft approaching on base; this created shorter final than usual but I kept me airspeed under control with power below my normal setting of 15-17 at about 12 inches; full prop; and was at 85 kts. Approach was stable and shallow for short field 1 white; 3 red; full flaps. My aiming point established; upon reaching aiming point flared stabilized; removed power; strike. Slid slightly right of center line. Stopped. Secured aircraft; mags; batt; and alternator. Later moved mixture to off; fuel off. At no time did the gear horn activate despite the low power settings and full flaps.recommended action - checklist to be modified to verify auto gear extension override setting; and gear warning horn operation.

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Original NASA ASRS Text

Title: PA28R pilot reported a gear up landing due to the automatic landing gear extension override lever being on.

Narrative: Departed. At 500 ft agl; safe airspeed (>80 kts); flaps up; gear up; fuel pump off turned cross wind at 1200 ft. At that point an aircraft announced that it was coming in from north for downwind; looked for aircraft coming in from north; no joy. Turned downwind. Called for aircraft coming in from north. Soon after turn; aircraft from the north announced he could see me; that he was behind me and would maintain safe distance. At approximately abeam mid-field; another aircraft announced it was entering pattern on base from the west. I began looking and began my setup abeam touchdown point; flaps; power; 500 ft descent; at that point I saw the aircraft coming in on base; higher than me; to my right about 1/2 mile. I communicated; and he stated he would extend his downwind. I turned base a little early to avoid other aircraft approaching on base; this created shorter final than usual but I kept me airspeed under control with power below my normal setting of 15-17 at about 12 inches; full prop; and was at 85 kts. Approach was stable and shallow for short field 1 white; 3 red; full flaps. My aiming point established; upon reaching aiming point flared stabilized; removed power; strike. Slid slightly right of center line. Stopped. Secured aircraft; mags; batt; and alternator. Later moved mixture to off; fuel off. At no time did the gear horn activate despite the low power settings and full flaps.Recommended action - checklist to be modified to verify auto gear extension override setting; and gear warning horn operation.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.